Release 1.0.0

[sanket1729]

Release 1.0.0
Added Changelog, Readme.

• ba02e75 Fix parser for issue add tests for script deserialization #63
• 4df9d76 Removed Legacy enum from types
• cac1a26 Added Miri tests on travis
• c93bdef Added ScriptContext to Miniscript
• bcbe365 decode 65 bytes pubkeys too
• 0576765 Change limit to 100kb
• 824fed2 Flip argument order of Witness::combine for and_v and and_b
• 6438f10 Improve Miniscript robustness
• f556fd6 Case Sensitve Fuzz fixes
• 475f6a5 PkH aliases
• 1d6f4e9 Upstream fixup, .gitignore
• f2c98a3 Final fuzz fixes
• 4374578 Miniscript Root Level Check for Descriptors
• b0c6452 Policy fixes
• ff9373a And or fragments must have exactly two arguments
• 71a52f0 fmt fixes
• e40e012 removed redundant roundtrip_policy
• 63c895c suppressed and fixed warnings
• 835a7a7 fixed benches
• 7fe3466 Added unit tests from fuzz repo
• 351576a Updated fuzz tests
• 8a6ea10 removed duplicate fuzz tests
• 9619d7c wqFixed pk_k bug, added test
• cc7459c Fix fuzz crashes (fixes Fuzz crashes #89)
• 0bb8457 Add clarification on 2015 edition usage
• 89bf5b4 Add alias pk(K) = c:pk_k(K)
• 4d02fea Change string "pk" -> "pk_k"
• 9d8ce52 Rename from_pk() -> from_pk_k()
• c7a2bf6 Rename Terminal::Pk -> Terminal::PkK
• 3dac01d Rename thresh_m to multi
• 53fd7b3 compiler.rs: Replace best_e and best_w function with best_fragment function to avoid code duplication
• 2b38374 compiler.rs: Use shorthand notation
• fd361f6 compiler.rs: Define PolicyCache type
• 1019be4 Fix cargo fmt --all -- --check error
• 3eebfd4 Fix issue 67
• f96c872 Cure RAS Syndrome
• 8d9faef Add examples to Travis runs
• 2eb7719 Give thresh weight estimation example with breakdown-

[apoelstra]

Can we delete the Stability section now? :)

[sanket1729]

Sure, I can make another PR